Program OverviewProgram Overview5 August, 20025 August, 2002

Reduced Vertical Separation Minimum (RVSM)

PRESENTATION 2

2

Overview

Program ObjectivesBackground and Operational ExperienceBenefits and CostsImplementation Date Factors US Rule Schedule

3

Proposed Program Objectives

Implement RVSM between FL 290 - 410 in December 2004 timeframe

Car/Sam plan under discussion

US plan: lower 48 states, Alaska and Gulf of Mexico airspace---where FAA provides air traffic services

4

US NAS Operational Evolution Plan

www.faa.gov/programs/oep

DRVSM is para ER-4 in NAS OEP

Principle Office of Delivery (POD): Director, Flight Standards Service

5

Reduced Vertical Separation Minimum

1,000 ft vertical separation applied globally, including domestic US, up to FL 290 for past 40 years

RVSM: enables reduction of vertical separation from 2,000 ft to 1,000 ft. between FL 290 - FL 410 (inclusive)

6

DRVSM Program Elements

Aircraft and operators approved by the appropriate civil aviation operator in accordance with Annex 6

Aircraft altimetry, auto-pilot, altitude alert systems modified to RVSM standards

RVSM policy/procedures incorporated into controller, pilot and dispatch programs

Air Traffic systems and programs revised

7

Program Elements (cont.)

Monitoring: aircraft altitude-keeping performance observed to confirm performance standards being met

Ground and airborne monitoring systems independently monitor aircraft performance

Safety Analysis: Collision Risk Modeling used to assess airspace system safety

8

RVSM Mandate

Exclusionary option: when implemented, RVSM approval required for operation in designated airspace, with limited exceptions

Tactical option used prior to Jan 2002 in UK, Austria and Germany

9

RVSM Implemented & PlannedRVSM Implemented & Planned

Pacific2/00

Pacific2/00

Implemented

Planned

NAT 3/97Mid East

11/03

Asia/EuropeSouth of Himalayas 11/ 03

Australia11/01

Canada South12/04

Canada North4/02

Domestic US2004

As of May 2002

WATRS 11/01

CAR/SAM2004

Europe 1/02

EUR/SAMCorridor 1/02 Western Pacific

South China Sea 2/02 - 10/02

** Western Pacific/South China Sea February 2002 Implementation

Bangkok, Ho Chi Minh, Kota Kinabalu, Kuala Lumpur, Manila, Phnom Penh, Sanya, Singapore, Taipei

October 2002 Implementation

Hanoi, Hong Kong, Jakarta, Ujung Pandang, Vientiane

10

Benefits in Oceanic Operations

Enhanced aircraft operating efficiency – reduced fuel burn at more optimum altitudes

Enhanced Air Traffic Management (ATM) flexibility

More aircraft on fuel/time efficient routes

11

Operational Experience

Air Traffic, Operations, Certification and Safety Analysis specialists have participated in ICAO Panels and Regional Implementation groups

Approx. 2.0 million RVSM flights

Approx. 8.0 million RVSM flight hours

12

Operational Experience (cont.)

Offset procedure implemented to mitigate wake turbulence for same-direction traffic

TCAS II (Version 6.04a) produced nuisance traffic alerts

In non-radar airspace, human errors contributed the most significant risk-bearing errors

13

RVSM Eligibility

Aircraft approved per FAA Interim Guidance 91-RVSM or JAA Temporary Guidance Leaflet

#6 are eligible for RVSM operations world-wide

Operators remain responsible for complying with operational policies in individual areas of operation

(e.g., Europe, Pacific oceanic)

14

Aircraft Equipage forRVSM Operations

!! Aircraft systems listed below must meet tolerances shown on next slide:

Two Independent Altimetry SystemsOne SSR Altitude Reporting TransponderOne Automatic Altitude Control SystemOne Altitude Alert System

15

Equipment Tolerances

Altitude Alert Threshold: +300 ft Aircraft type certified after January 1, 1997: ±200 ft

Automatic Altitude Control System: +65 ft about acquired altitude

Aircraft certified prior to 1/1997: soft altitude hold +/-130ft allowed

•ASE Requirements Basic Envelope Full Envelope Group Aircraft (ACO approved SBs or STCs)

[Mean ASE of the group] <80 ft (25m) [Mean ASE + 3SD] <200 ft (60m)

<120 ft (37m) <245 ft (75m)

Non-group Aircraft (Individual airframe approval)

[Residual static source error + worst case avionics] <160 ft (50m)

<200 ft (60m)

16

TCAS Version 7.0

ICAO Annex 6 Part I (Commercial Air Transport):from 1 Jan 2003, all turbine-engine airplanes with take-off weight greater than 15,000 kg or capacity of more than 30 passengers shall be equipped with ACAS II (TCAS II Version 7.0)Part II (IGA): from 1 Jan 2003, all aeroplanes equipped with pressure altitude reporting transponder that operates per Annex 10

17

Example US Benefits 2004 - 2018

Adds 6 additional FL’s between 290 - 410

Fuel Savings Benefits 2004 – 2018:$5.8 billion ($2.9 billion discounted)9/1 benefit/cost ratio; 5/1 ratio discounted$371 m. first year savings---1.5% annual increase

ATS benefits will be covered in ATS program briefing

18

Example Costs 2002 - 2016

$634 million costs:

Aircraft/operator approvalIf TCAS II equipped: Version 7.0 upgrade MonitoringAir traffic system modification and controller training costs

19

Implementation Date Factors To Consider

Percentage of aircraft already approved New airframes now delivered RVSM ready Percentage of flights to be conducted by RVSM approved aircraft by Dec 2004 timeframeFirst year fuel savings and ATM benefits at stake Aircraft Engineering Packages available Process available for non-group/unique airframe approval

20

Date Factors (cont).

Innovative aircraft engineering solutions availableOptions for Unapproved aircraft:

Operate at FL 280 and below (fuel burn penalty, but relatively short duration flights)If capable, climb through RVSM FL’s to operate at FL 430 and abovePotential tactical implementation

Economic decision for some operators Options for unapproved aircraft to be accommodated

21

US Rule Schedule

Notice of Proposed Rulemaking is available at:http://dms.dot.gov

Click “Simple Search” and docket number 12261

May 10….Notice of Proposed Rulemaking published

August 8….close of comment period

Jun 2003….publish final rule

22

Conclusion

RVSM implementation requires commitment from operators and authorities